# name : coxph regression
# key: coxph
# contributor: Shuguang Sun
# --
coxph(
${1:Surv(AVAL, EVENT) ~ TRT01P + strata(HISTCAT)},
data = ${2:data},
ties = ${3:$$(yas-choose-value '("efron" "breslow" "exact"))}
)$0